/Engine/Source/Runtime/Engine/Classes/Particles/ParticlePerfStatsManager.h
This listener displays stats onto a debug canvas in a viewport. It does not sync with the Render Thread and so RT stats are one or more frames delayed.
class FParticlePerfStatsListener_DebugRender : public [FParticlePerfStatsListener_GatherAll](API\Runtime\Engine\Particles\FParticlePerfStatsListener_Gathe-)